A health disorder that results from the deficiency of tyroxine in adults and characterised by i) low metabolic rate ii) increase in body weight and iiii) tendency to retain water in tissues is

Question

$\begin{array}{1 1} \text{a. Simple goitre} \\ \text{b. Myxoedema} \\ \text{c. Cretinism} \\ \text{d. Hypothyroidism} \end{array} $